Pall

A subordinary variant (considered an ordinary by some authors), probably derived from the pallium, or ecclesiastical vestment in the form of the letter Y. It consists of half a pale issuing from the base, and conjoined  in the fess point with half a saltire from the dexter chief and sinister chief.  Also termed pairle and shakefork. See Subordinary

The pall as part of the arms of the See of Canterbury

An archiepiscopal vestment made of white lamb’s wool.